Cercopithecus cephus ngottoensis Colyn 1999

Colyn 1999. [Population study of the superspecies Cercopithecus cephus inhabitant of the forest enclave of Sangha-Oubangui (central African Republic). Description of C. cephus ngottoensis subsp. nov.] Mammalia, 63(2) 1999: 137-147